Valve operating and controlling means



Patented July 28, 1925.l

AIrsKA'iizR` AND'OMAR `E.,oI .ARI1, OE DENVER, COLORADO, v.AssIeNoRs To THE i ARTHUR DENVER ROOK DRILL MANUFACTURING COMPANY, OE DENVER,y COLORADO, A

*CORPORATION or DELAWARE( v OPERATING ANDOONTROLDINGNEANS.

` Appiication mea september 4`,f 12s seal No. scossa To @ZZ 'whom t may concern.' Y

Be it known that we',--ARTHURH`. YSKAER and OMAR E. CLARK, citizens of the United States, residing at Denver, in the'county of Denver and State of Colorado, have invented certain new and useful Improve-v tically no thought on thev part of the operf ator, and in which the parts are assembled in a simple and effective manner.

In the accompanying drawings,

Figure 1 is a side relevation of a drill sharpening machine, showingthe operating meansA and indicating 'its vrelation to the parts controlled, l

- Figure 2 isaside elevation of the operat- "ing device, partly in section, g

Figure 3 is a sectional viewon the line 3-3 of Figure 2.

In the.V apparatus disclosed, a base 4 is employed, carrying relatively movable coacting work clamping dies 5 anda fluid actuated dolly hammer 6 that operates on a drill steel clamped bythe dies 5. A controlling valve for the die actuating mechanism and dolly hammer is indicated at 7, and may be of the type vdisclosed in the aforementioned application. The valve includes a stem 8 connected to a bell crank 9, which bell crank in turn has a link' connection 1() with the crank arm 11 of an actuating rock shaft 12.` This rock shaft projects from one side of the base 4, and the invention in the present case resides in the means for operating the rock shaft and thereby the valve and holding it in different positions. As above indicated this actuating means may be employed for other purposes.

A crank arm 13 is pro-vided at one end witha split` sle-eve 14 that surrounds the projecting end of the shaft and` fixed thereto by a contracting .bolt 15. `The outer end of the crank arm is provided with an outwardly offset hand grip. 16 preferably l integral with the arm 13. This hand grip has at its outer side a longitudinal slot 17 that extends across the outer end of the arm 13 andsaid arm 13 has a longitudinal v socket 18 drilled in its outer end and intersecting the inner end `of the slot 17. A holding dog 19 is pivoted, as shown at 20 in the slot 17 at one side of the outer end of thev socket 18 and has a .handle 21 overlying the slot 17 and movable in the same.

The inner end of this dog 22 lprojects. beyond the inner side of the yarm 13 and is adapted to ride upon a quadrant plate 23 secured to thevbase 4. The portion 22 is slightly offset from the handle 21 and rests upon the bottom of the slot 17, leaving the ing its inner end fastened Aat Vthe bottom of said socket by a cross pin25. The Outer Y end of the spring is securedby a pin 26 in vhandle 21 projecting beyond the grip 16 as a recess 27 formed in the inner side of the mediate lug 30 forming a socket 31 adapted to receive the end 2 2 lof the dog. The lug 30 is of less height than the shoulders 28.

With this construction, when the dog 22 isv inl the socket 31, the valve will be locked in a predetermined position. To actuate said valve, it is only necessary for the operator to grasp the grip 16 and handle 21. By pressing the two together obviously the end 22 of the dog will be disengaged from the notch 31 so that the arm 13 is swung rearwardly to any desired position until the dog 22 abuts against the stop shoulder 28. Upon a return movement the dog Will again move into the notch 31 and hold the parts in their initial position.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it 4will be understood that various changes in the size, shape, proportion and minor details of construction, may be resorted to Without departing from the spirit or saeriioing any of the advantages vof the invention.

Having thus fully described our inven-A tion, what We elaiin as new, and desire to secure by Letters Patent, is y Y l. A swinging handle arm having anoffset hand grip at one end, said arm having a longitudinal socket extending inwardly from the hand grip, a holding dog pivoted at the outer end of the arm, and a spring connected to the dog and located in the socket.

2. A swinging handle arm having an o'- set hand grip at its outer end provided With a longitudinal slot, said arm having a longitudinal socket that opens into the slot, a holding dog having a pivotal mounting in the slot adjacent to the socket, and a coiled spring in the socket engaged Withthe dog.;

In testimonyvvhereof, we ax our signatures.

ARTHUR H. sKAER. oMAR R. CLARK.

Witnesses: Y

JOSEPH A. WALSHE. R. A. DoWNING. Y 

